Tube bird feeder



FIG. 1 is a front elevational view of a tubular bird feeder showing our new design, with the back side elevational view being identical thereto;

FIG. 2 is a right side elevational view thereof, with the left side elevational view being identical thereto;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a tube bird feeder, as shown and described. 